Tags

Type your tag names separated by a space and hit enter

Determination of 3-alkyl-2-methoxypyrazines in lady beetle-infested wine by solid-phase microextraction headspace sampling.
J Agric Food Chem. 2008 Feb 13; 56(3):1065-71.JA

Abstract

This study determined the concentration of 3-alkyl-2-methoxypyrazines in Frontenac and Leon Millot wines made from grapes that were naturally or artificially infested with the multicolored Asian lady beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae). Headspace sampling with solid-phase microextraction (SPME) and gas chromatography (GC) was used for the quantification of 3-isopropyl-2-methoxypyrazine (IPMP), 3- sec-butyl-2-methoxypyrazine (SBMP), and 3-isobutyl-2-methoxypyrazine (IBMP). The resulting method parameters included linearity (r2 > 0.98), limit of detection (>0.25 ng/L), relative standard deviation (<20%), and recovery (75-125%). IPMP concentrations in wine were not significantly different among the levels of natural or artificial infestations of H. axyridis. SBMP was found only in wine artificially infested with H. axyridis. IBMP was found in wine artificially infested with H. axyridis and in Frontenac wine, but not in Leon Millot. The consequences of these results for future research in the contamination of wine with H. axyridis are discussed.

Authors+Show Affiliations

Department of Entomology, 219 Hodson Hall, 1980 Folwell Avenue, University of Minnesota, St. Paul, Minnesota 55108, USA. galva008@umn.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18193837

Citation

Galvan, Tederson Luiz, et al. "Determination of 3-alkyl-2-methoxypyrazines in Lady Beetle-infested Wine By Solid-phase Microextraction Headspace Sampling." Journal of Agricultural and Food Chemistry, vol. 56, no. 3, 2008, pp. 1065-71.
Galvan TL, Kells S, Hutchison WD. Determination of 3-alkyl-2-methoxypyrazines in lady beetle-infested wine by solid-phase microextraction headspace sampling. J Agric Food Chem. 2008;56(3):1065-71.
Galvan, T. L., Kells, S., & Hutchison, W. D. (2008). Determination of 3-alkyl-2-methoxypyrazines in lady beetle-infested wine by solid-phase microextraction headspace sampling. Journal of Agricultural and Food Chemistry, 56(3), 1065-71. https://doi.org/10.1021/jf072382z
Galvan TL, Kells S, Hutchison WD. Determination of 3-alkyl-2-methoxypyrazines in Lady Beetle-infested Wine By Solid-phase Microextraction Headspace Sampling. J Agric Food Chem. 2008 Feb 13;56(3):1065-71. PubMed PMID: 18193837.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of 3-alkyl-2-methoxypyrazines in lady beetle-infested wine by solid-phase microextraction headspace sampling. AU - Galvan,Tederson Luiz, AU - Kells,Stephen, AU - Hutchison,William Dale, Y1 - 2008/01/15/ PY - 2008/1/16/pubmed PY - 2008/4/25/medline PY - 2008/1/16/entrez SP - 1065 EP - 71 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 56 IS - 3 N2 - This study determined the concentration of 3-alkyl-2-methoxypyrazines in Frontenac and Leon Millot wines made from grapes that were naturally or artificially infested with the multicolored Asian lady beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae). Headspace sampling with solid-phase microextraction (SPME) and gas chromatography (GC) was used for the quantification of 3-isopropyl-2-methoxypyrazine (IPMP), 3- sec-butyl-2-methoxypyrazine (SBMP), and 3-isobutyl-2-methoxypyrazine (IBMP). The resulting method parameters included linearity (r2 > 0.98), limit of detection (>0.25 ng/L), relative standard deviation (<20%), and recovery (75-125%). IPMP concentrations in wine were not significantly different among the levels of natural or artificial infestations of H. axyridis. SBMP was found only in wine artificially infested with H. axyridis. IBMP was found in wine artificially infested with H. axyridis and in Frontenac wine, but not in Leon Millot. The consequences of these results for future research in the contamination of wine with H. axyridis are discussed. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/18193837/Determination_of_3_alkyl_2_methoxypyrazines_in_lady_beetle_infested_wine_by_solid_phase_microextraction_headspace_sampling_ DB - PRIME DP - Unbound Medicine ER -